Year: 2003
Type: article
Abstract: Transient time-domain resonances found recently in time-dependent solutions to Schr\"odinger's equation are used to investigate the issue of the tunneling time in rectangular potential barriers. In general, a time-frequency analysis shows that these transients have frequencies above the cutoff frequency associated with the barrier height, and hence correspond to nontunneling processes. We find, however, a regime characterized by the barrier opacity, where the peak maximum ${t}_{\mathrm{max}}$ of the time-domain resonance corresponds to under-the-barrier tunneling. We argue that ${t}_{\mathrm{max}}$ represents the relevant tunneling time scale through the classically forbidden region.
Source: Physical Review A
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2074070469